package demo15;

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sr=new Scanner(System.in);
        String n=sr.nextLine();
        String[] s=n.split(" ");
        int f=0;
        int sum=0;
        for (int i = 0; i < s.length; i++) {
            try{
                sum+=Integer.parseInt(s[i]);
            }catch (Exception a){
                f=1;
                continue;
            }
        }
        System.out.println(sum);
        if(f==1){
            System.out.println("attention");
        }
    }
}